The New SimpliSafe SD3 Smoke Detector Alarm SSSD3 in White is a wireless smoke detector that operates on batteries, making it convenient and easy to install. With its sleek design and compatibility with SimpliSafe systems, this alarm offers reliable protection for indoor spaces. Manufactured in 2018, this modern smoke detector is connected via Wi-Fi for seamless integration into your smart home setup. Designed for indoor use, this alarm is a reliable addition to any home surveillance system.